Where does “əsa” come from?

əsa (Proto-Sunda-Sulawesi) comes from Proto-Malayo-Polynesian əsa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.

Ancestry of “əsa”, step by step

StepLanguageWordMeaning
1Proto-Malayo-Polynesianəsaone
2Proto-Austronesian*əsa—
3Proto-Oceanic*isa—
Every word from Proto-Oceanic *isa →Every word from Proto-Austronesian *əsa →Every word from Proto-Malayo-Polynesian əsa →